Definitely a summary. (Welcome to CAA by the way!) Actually, it feels exactly like what it is: brainstorming. I'll often write out something similar as a preliminary idea, but very little of it actually makes it into the story in this form, because it's too direct and breezy. For example:
Twila27 wrote:With no way out, but completely covered by the multitudes, Kuya believes she is safe and relaxes her hold on her younger brother, who she gently hugs to her.
This sentence certainly describes Kuya's behavior, but in the grand scheme it's not very interesting to read. It doesn't
really help me understand what Kuya is thinking or feeling, so I feel detached from her. For a finished story, you would want it to be more like this:
Esoteric wrote:Kuya pressed her way through the throng of listless survivors, keeping her brother close to her side. Pushing and ducking low, she squeezed her way through mob, fighting to keep her quick pace. The alley was slick with mud from recent rains and she nearly tumbled to her knees again as someone pushed her sideways. Recovering, she paused for breath, glanced over her shoulder. Nothing. She'd lost them for now.
Her breathing slowed, the air moving around her reeked of stale sweat and dirt, but at least they were hidden among so many others. She relaxed her grip on Jason's shoulders and stooped forward, hugging him gently.
"You did very well," she smiled.
One sentence becomes nine. It took a lot longer to write, but now I can feel the people jostling, smell them, feel more of Kuya's panic and exertion. It helps put me in the scene, in Kuya's shoes.
Your summary also switches back and forth between past and present tense. You'll need to chose one and stick with it. I recommend using perfect past tense. (example: Jason walked to the store for milk. They didn't have any and there wasn't anything he could do. He went home.) It's the standard and what people feel most comfortable reading.
People do occasionally write stories in present tense, but it's very avant-garde. (example: Jason walks to the store for milk. They don't have any and he can't do anything about it. He goes home.) I'd avoid writing stories in this tense unless you know exactly what you're doing.
I wish you luck with this. Writing is a lot of work, but it can be very rewarding.